<template>
    <div>
         <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>数据统计</el-breadcrumb-item>
        <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
        <div id="main" style="width:750px;height:400px"></div>
    </el-card>
    </div>
</template>

<script>
    import *as echarts from 'echarts'
    import _ from 'lodash'
import { Message } from 'element-ui'

    export default{
        data(){
            return{
                //需要合并
        options: {
          title: {
            text: '用户来源'
          },
          tooltip: {
            trigger: 'axis',
            axisPointer: {
              type: 'cross',
              label: {
                backgroundColor: '#E9EEF3'
              }
            }
          },
          grid: {
            left: '3%',
            right: '4%',
            bottom: '3%',
            containLabel: true
          },
          xAxis: [
            {
              boundaryGap: false
            }
          ],
          yAxis: [
            {
              type: 'value'
            }
          ]
        }
            }
        },
        created(){},
        //此时页面上的元素被渲染
        async mounted(){
            var myChart = echarts.init(document.getElementById('main'))

           const {data:res} = await this.$http.get('reports/type/1')
           if(res.meta.status !== 200){
            return this.$message.error('获取折线图失败')
           }

            //4.
          const result =   _.merge(res.data,this.options)

            //5.
            myChart.setOption(result)
        },
        methods:{}
    }
</script>

<style lang="less" scoped>

</style>